Gas-stove.



O. G. GOULTER.

GAS STOVE. APPLIGATION FILED JAN. 24, 1914. 1 ,1 23,175. Patented Dec. 29, 19M

2 SHEETS-SHEET 1.

WITNESSES: INE ENTOR I 0.0.GOULTBR.

GAS STOVE. APPLICATION FILED JAN. 24, 1914.

Patented Dec. 29, 1914.

2 SHEETS SHEET 2.

/ u iiliiiii-i-l INVENTOR 6. C. Cou l M r.

A TTORIVEY cmrronn c. commie, or ron'rnann, cancers.

GAS-STOVE.

Application filed January 24,

' To all whom it may concern:

the arrows indica I Be it known that'I, CLIFFORD C. CoULTER, a citizen of the United States, and a resident of the city of Portland, county of Multnomah, State of Oregon, have invented a certain new and useful Improvement in Gas-Stoves, of which the following is a specification.

My invention has for its object to provide a gas stove which shall prevent the fumes of combustion escaping into the room, but

carrying them, instead, to the exterior of the building. The same construction also provides protection against the room becoming filled with gas, in case of the acci-' dental extinguishing of the flame, after the burner has been turned on and lighted.

My invention further has for its object to draw in and heatthe cold air from the floor of the room; also to cause the air so drawn in to be highly heated in its passagethrough my stove. a

My invention further has for its object to attain all the above described results in an inexpensive, durable stov g The details of construction and operation of my stove are hereinafter fully described.

In the accompanying drawings: Figure 1 is a front elevation of my stove; Fig. 9 isa vertical section taken entire line? of Fig. 1; Fig. 3 is a top view of the stove with portions of the upper plate broken-away,

ting the .direction of the air currents while being heated; F ig.. 4 is-an enlarged fragmental vertical section on the line 4-4 of Fig. 3; Fig. 5 is a horizontal. section on the line 5-5 of Fig. 4; and Fig.

' 6 is a detail of the'safety check valve plate, 6, of the chamber a is the casing'of my device, resting on legs 6. The front of'the casing is provided with a door '0. Angle irons, d, on the inside form a supporting medium for thebottom' provided in the top of my stove for efficiently heating the air drawn in and through my stove from the" floor of the room. The plate, c, .is made with parallel ribs 7 (as shown in Figs 2 and constituting bailie 'platesf'or partitions compellingv the air circulated through the stove to pass over highlyheatedfsun faces, and so become highly heated. ,Also. integral with the plate, e, and located be neath it, is a housing 9. A' coverit,{pro-' vided with holes, i, is adapted to form' a closure for the top of my stove. The plate, 1 c, is provided at its diagonal corners with Specification of Letters Patent.

' extends inwardly through the latter give the the doors c, u, are closed.

air in the room,- 'air'up through. the 'cold'estair of the room will always be of reheating-the warm'ainf re'ctiy' blast against the flame,

Patented Dec. ea, rate; sle. Serial No. 214,234.

holes 7', and pipes lo, flaring at their lower ends, connect the upper side of thefphtteJe, with the air under the bottom of the'stove. A- plpe m (see Fig. 2) connects the interior. of thehousing z, with a chimney flue (not shown), and is adapted to carry offal'l gases generated by the burning-of the gas. 'A PIPE n connects the interior. of the inner housing 9 with thekair. exterior of the cas: mg a, and is in-parallel alinem ent with 'the pipes it. Both ends of said pipe at are fiaredu- The pipe ni comprises twosections connected by anipple a, See Figs. 2and 6, The top-of said nipple n is provided with a screen a and a flop-valve a is n. Said valve 41 is"made of very light material, "so. that it will open closed when versed. The screen a is to reinforce the valve-against bursting under a heavydoWn- A j gas-inlet pipe, 0, pm: I Y .30

ward pressure; vided with an-air mixer-r and ;-a. velvet,

through the and is carried upward into the inner housin" where it connects with a gas burner't... inner housingg is'provided 'with'a door a, located in alinement with the door 0, and holes a in the bottomof the innerhousing open out into; the. interior of thefcasing'o. A water heatingcoil, burner t, the inlet of cated at w and-the outlet 'The acltion of When the valve, 8, is opened the burner'znay be lighted through the doors,- 0, I the air mixer-r has been adjusted so as to proper intermixtureof gas and air into I-the pipe a,

thispipe being indithe flame will raise the orificeapi, in the top iathus creating an air current in the direction indicated by the The air-inlet 'pipes k be 1 ing connected vvwith the coldest stratum of.

' will continually draw cold arrows in Fig. 3.

thecrifices 9'. In. this way heatedinsteadas' is commonly {lone inthe types .offgas stoves 'now' used. The pipe, n, openirig di-. beneath the burner t, Will actas' a; v 'so a's-to' carry it up directly against the] pl casing, and;

w,'is located over the ,umlerthe"infiu-ence of a light-upward draft, but Will'be;

the direction 'ofdraft is'znee I he- 7 my device is as follows:

u, and after I The heat from" temperature of the plate 6, and'the air will "rise through the ates, The gaseous nets of combustion are carried to products of combustion ,being heavier than air will locate in the lower part of the inner housing g and thence will esca e through the holes o into the casing a, rom which they will be carried by the pipe mate the atmosphere. Escape through the pipe n will be prevented by the. check valve n Since there is no outlet for the gases in the inner housing 9 except through one of the bottom orifices o, and since the gaseous products of combustion are heavier than air, the air of the room heated by my stove will always remain uncontaminated. My stove also protects against the room becoming filledwith gas by the accidental extinguishl-jl'lg of the flame while the gas is turned on. "The bafile partitions in the air heating chamber at-the top 0 my gas stove insure an eflicient heating of the air circulated through my gas stove by compelling the air current to follow a circuitouspassage in escaping from the top air heating chamber.

The outer casing of my stove, by inclosing the inner housing, holds the hot air emitted from thelatter in the form of an eficient insulating medium, which serves as aheat retainer for the innerhousing. The result is the pipe.

ing chamber through said outer casing, a

combustion chamber located centrally within the outer casing and directly under said heating chamber, said combustion chamber having an .bpening at the base-intotheouter casing, a gas burner in such combustion chamber, a pipe connecting said burner with a gas supply, an air inlet pipe leading from exterior the outer easing into the combustion chamber, a check valve in such air inlet pipe adapted-to close againstan outflow, and an outlet pipe connecting the lower part of the outer casing with .the atmosphere exterior of the 'room.

2. A gas stove comprising an outer casing lnclosed on all sides, top and bottom, an air heating'chani'oer located within the top of such casing, inlet air tubes extendingintosuch heating chamber through said outer casing, a combustion chamber located within the outer casing and directly under said heating chamber, said combustion chamber having an opening at the baseinto the outer casing, a gas burner in such combustion chamber, a pipe connecting said burner with the gas supply, an air inlet pipe leading from exterior the outer easing into the combastion chamber, a check valve in such air inlet pipe adapted to close against an out flow, and an outlet pipe connecting the lower part of the outer casing with the atmos phere. I v i CLIFFORD (3. CQULTZER- Witnesses:

NVM. Chscmarm,

CECIL Lose. 

